Knitting-machine.



W. W. BURSON. KNITTING MACHINE.

APPLICATION rILBD JAN. 2, wus.

Patented May 7, 1912.

G SHEETS-SHEET 4.

Specificatie Amcaten filed I.

To all w/Lom t may concern.:

Be it known that l, lVILSoN Venen o son, a citizen of the United States, res at Rockford, in the county of lflvi'nnel" Y and State of Illinois, have invented a .en and useful Iniprmfement in'I .lnitting-lrlfi. I chilies, of which the following is a speeiew I tion.

My invention relates inprfr/en" straight knitting machines. han' ng allel rows of needles mounted on rames with an opening"` between the knit fabric to pass tl" n j ot of my invention is to'siin'pl` struction and improve tlietperat knitting maehine,.as Will apli-gear seription of the parts. I' attzii by the mechanism illustra ted l panying drawings in ivliich,' y

Figure 1 shows an end elevation, certain Fig. 2'

plan of one o a longitudinal section ot said cam showing the adjustingr devices; Fig. 12

cams; Fig. 11 is l shows the 14 are Wheel 20,'show1ng the parts in different pattern controlling devices.' l? I! positions; Fig. 15 a detail side elevation l I detail views of the switch ot a portion of the mechanism for effecting the interchange of the guide carriers.

Similar letters refer to like parts through-- out the several views.

In the drawing, l is the supporting base; 2 is the frame to which the operating parts are mainly attached; 3 is a rocking lever, the lower end of which is pivoted to the i base by a link connection (not shown) and the upper end of which is pivoted to and operates a crosshead 4. pitrnan 5 is pivoted at one end to the rocking lever, and its other end engages the crank pin 6 of the crank '.Wheel 7 e'maehine is on one end of the shaft journaled on frame". 2. On the other end of shaft l0; is the driving pinion 11 which meshes with i o oe'descritied farther is a. top plan y eel'' onshaft 18. A 'i actuated from shaft is zi-red on shaft 14 journaled on 'frame 2. On farther end of shaft Ll is a 1pinion l' i gearlG on the rotary pattern nd said gear 16 meshes in gear i 61?' of the enact-ing rotary pat.- Qhaft 18 carries a switch. Wheel 19 operates the yarn changing device. on,.end a. second 'L70 throughl which the Wheel 'vali ich the composite type, consisting of t 23 und bottoni plates 2l held earn bars l the needle beds; fastened to the cro-ss d receive motion from the rocking.;` Y @n the under side ocach cam har fastened the needle retraeting cam 29 and the needle projecting cam 30. I The usual construction in straight knitl ting rnaei'iinesis to havethe entire retractlng eems'lnoveble for adjustmentand usw ally the earn is made in` two piccesn-l't seen that the main body my ceni'is in one piece which is fa, en rigidly to the cani liar, te which it beunigs, and the adjustment in 'the knitting is madeby providing the can; Witt 'i 25W-29h located at the anni. `itis points turned forward into the dotted msitioin tin needles operated upon by the jacks 3l will he drawn back'lart-her than if the points were in the fullline position, and hence knit looser, and When turned hack in the opposite direction, the needles will not he drawn down so far, and hence will knit tighter. These adjustable points are conveniently formed on the edge of two disks 292 secured on studs 29d and held in circular hearings in vthe cam bar, `and by means of their studs passing through the cani bar and the connecting levers 29? and 291? attached to the studs, the points can be turned in either direction desired. The lever 29e has a handle whereby both levers may be operated in unison, and both the adjusting points siniilnrlv adjusted, and the handle has a springr Whitt: engages a rack 29h and thereby locks the levers in their adiusted positionu The ll are controlled by corresponding 32 pivoted toot-hed theel The needle beds are"prel"` inclination el." 2.728"

seen that when the the needles are inactive.

at the lower edge of the/needle bed, and having feet 32a resting on one of the rot-ary patterns. When the needles are desired to work, the pattern holds the lever up and also holds the correspondingjacks in reach of the knitting cams, and when the needles have done their duty and are desired to remain inactive, they pass entirely oil' of the pattern which is cut away from that pointI up to the point at which the needles resume work: A spring 33 or other proper means acting on lever 32 forces the lever down as soon as it ceases to be supported by the pattern and with it causes the jacks 31 to be drawn out of reach of the knitting cams. I prefer to make the rotary pattern by casting it with only such amount of acting surface'as is required to make the necessary pattern, as will be seen from Figs. 2 and 7. A stop 32b is fastened to the needle bed and limits the downward movement of the vibrating levers, which serves the purpose of a lower surface plane upon which their 'feet may travel when This construction makes a cheap Aand very much lighter rotary pattern than those heretofore used.

I have shown the pattern required for half hose in which the notched or stepped part from c to d forms the toe pattern; that part from d to e forms the foot portion; that part from c to f is the first half of the heel pattern, and a corresponding portion not shown forms the other half of the heel. The patterns may be described as forming mutilated drums or cylinders having a large and irregular part to wit, the non-acting portion of their walls or peripheries cut away. They are supported from their sh-afts by arms 65. It should be noted that the notches shown vary with-the gage ofthe machine, running from inch in four gage, to 1/20.inch in sixty gage. The shaftsv 61 and 61 supporting the rot-ary patterns are held in the bearings 61' pivoted ,in frame 2, and as itis desirable that the rotary patterns to be easily-adjusted to the proper height withr-reference to the vibrating levers 327 Ifdo this conveniently by making the bearings 61b adjustable, placing supporting screws 62-63 above and below them andattaching the bearings' topivotcd arms G4 as shown in Fi 1. This construction of the bearings, a so permits the removal of the patterns at any time when necessary or desirable for change of the pattern orf'v for repair, without disturbing the needle bed.

Gears 16-17 which mesh together are fastened upon the rotary pattern shafts whereby the shafts are caused to move in unison.; Their movements are, however, intermittent inasmuch as the toothed wheel Y13 through which they are actuated is moved' intermittently by the switch wheel 20 which is fastened on shaftlS.

proj ect-ing Motion is given to the toothed wheel 13 by the swinging of the switch sections 34, 34a forming part of the central upstanding rib on wheel 20. These switch sections are so placed that the movements caused by them shall occur nearthe end of the cam bar movements. VVhenrswitch 34 is moved to stop stud 35 the end of the switch engages a tooth of wheel 13 and moves the wheel forward one step, so that the stationary or non-adjustable portion of the rib which follows said switch will engage the next tooth of wheel 13., When in the continued movement 4of the wheel 20, the other switch is similarly opened, the wheelA 13 is shifted another step, and these operations are' repeated indefinitely.

In certain kinds of work, it is desirable to turn the pattern backward and when this occurs the switches are turned out in the other direction to stop-stud 36 so that wheel 13 is operated backward, the operation being exactly similar to that above set forth except that it is reversed in direction. To adapt the vibrating levers 32 to the backward movements Vof the pattern cylinders, the feet 32"1L are beveled upon both their front and back faces so that they will be lifted from positions off the cylinder up on to the surface of the same whenever that is-necessary in either the forward or back rotations.

The mechanism for shiftingthe movable switch sections upon wheel 20 is'desirably constructed as follows: At 470 is a shaft on which is mounted the ratchet plate 44, which is operated by a pawl 46, the end of which cam 47 on shaft 18. This cam is adapted to impart a to and fro movement' to the pawl and thus cause it to turn the plate 44 step by step. At 40 is a lever, pivoted stationarily at its rear end in an armv and having a foot at the other end which rests upon the control plate 43 attached "to the ratchet plate, and this plate 43Ahas teeth forming three diiferent planes adapted to vsupport the foot in different positions, and by these different positions the position of an arm 38 whereby the switch sections are operated, is regulated. The three positions mentioned consist of the top of the teeth of plate 23,I t-he intermediate shoulders shown as being formed on the teeth (the foot is shown at Fig. 12 as resting on one of the shoulders) and the bottoms of the separating spaces between the4 teeth. .The lever 40 is connected by a link 41 to a crank 42 on a rock shaft 39 on which is fastened the arm 38 already mentioned, and on which are cam blocks 3 8a and 38". This vshaft 39 is parallel to shaft 18, and suiiiciently near to it so that the arm 38 may swing against and through saidcams operate the arm 37 from the switch sections.

enters the groove of when the arm 37 which is I times to drop the fabric I switch section in latter are pivoted upon pivots 82, so that also pivoted at 83 is engaged by the cams, the switch section will be swung either toward the stop 36 or toward the stop 35, depending upon which cam engages the arm 37. The positioning of lever 40 by the teeth of plate 43 determines which cam of arm 38 shall operate on the switch section, and the the direction in which the section shall be moved. The tips of the teeth of cont-rol plate 43, the intermediate shoulders of the teeth, and the recesses between the teeth all impart varying degrees of throw to the arm 38, in one of which Athe cam 38a is positioned to operate the switch section, in another of which the cams are rendered neutral, being positioned so they do not engage the arm 37, and in the last of which the cam 38b is positioned to operate the kthe reverse direction from that imp rted by cam 38.

The ya n is delivered to the needles by the yarn ca rier 49 which is moved back and orth by t e driving bar 50 fastened adj stably to a, bar on the cross head, and is adapted to feed the yarn to either row of needles or to both rows at once as in setting `iup the work, the movement of the needles being controlled by the pattern. It is desirable at times to change the yarn while the machine is in motion, and for this purpose a series of yarn carriers are pro` vided as 49-49"i 49b which are held in a transfer bar 51 supported by the bed piece 52 at` right angles .to the passage of the cam bars. At eachV round the lcarriers are brought into one of the receiving grooves 53,54, 55 or 56 of the transfer bar. These grooves are all adapted to be moved into register with the yarn carrier grooves in the needle bed, and the guide carriers have their ends bent up at right angles so that they are adapted to catch under the overhanging lip ofthe driving bar 50. (See Fig. 15). The sides of the driving bar being open, the carriers are free to engage and disengage themselves When moved sidewise by the transfer bar. If the transfer bar is moved, the carrier then in register with the groove of the needle nient be carried out of register and another moved into register, the former disengaging itself from the driving bar and the latter taking its place in engagement therewith. The disengaged carrier will remain at rest in the transfer bar, and the newly engaged guide enter into service. It is desirable at from the needles, and this is conveniently done by bringing an empty groove'of the transfer bar in register-with ilfe driving bar When the needles will operate without yarn and the fabric drop therefrom.

The transfer-bar 5l is conveniently opcam determines ytion 480 rwhereby it and the grooves in which the bed will by the movery erated by the lever 57 pivoted on stud 58, the lower end of the lever being in the form of a toothed segment 60 meshing inV the switch Wheel 19, and the upper end of lever being connected to the transfer bar by the link 59. It is seen that when the switch 19a on wheel 19 is moved to the stop stud 19h, it engages a tooth of the'segment 6() and moves the transfer bar one space to the right; and when the switch is moved to stop stud 19 it engages a tooth of segment 60 and moves the transfer barone space to the left. Switch 19a on wheel l5) is conveniently controlled by mechanism" similar to that which'is described as lcon- 30 trolling switch 34 and is not shown.

The working of knitting'machines of this' type is so well known that l have thought necessary only to describe the novel features-of my inv'ntion. l

I have shown in Figs. 3, 4 and 5, the switch wheel 20 as provided with duplicate fswitches exactly alike, and indicated by the reference numerals 34a, 37a and 38a, and I1' have duplicate switches in machines heretofore made by me. But one switch on said Wheel is all that is necessary. A disk 48 is#v mounted on shaft 470 in front of thefratchet` .f plate 44, and it is provided withI a projec-v ratchet fplate` g5 springs 8G in'Figi'y 4 s 1 may be turned. The assist in maintaining an upright position.

WhatIclaim is: I- i i. la 1. The combinationA ofa needle bed '1100 formed substantially of wallplatesand :botf-f tom plates held together ink series nto form' needles. shall move-,"-

jacks to operate the needles, vibrating levers-y f to control the jacks, means to 'hold the vi`f10"5 brating levers in their .lowest position, fixed stop to limit thedownward drop of the vibrating levers, and: a rotarypattern' adapted to t' termine which needles-shall@ operate. v Jf '110 2. The straight knitting machine Yvvhevrfei'njV are combined knitting needles heldin staff'l tionary beds, jacks operating the needles,

vibrating levers controlling the jacks, ro"`-' y* tary pattern cylinders movable` in eitherl15 direction, and uponV whichsaid leversridegfa toothed wheel geared `t'lthe cylinders, j a` .switch wheel arrangedL at right anglesfto*Vl said wheel and having a peripheral rib en gaging the same, said rib embodying a movable section, a vibrating lever for shifting said movable section, blocks carried by said lever whereby it is adapted to impart different movements to the section, and means for actuating the vibrating lever.

3. The combination of a driving gear, adapted by proper means, to operate a knitting mechanism, a cam groove wheel on rocking arm controlled the driving shaft, a by said cam. a pawl pivoted on said rock- 13b thesWitclrsection inl i a foot adapted t shaft, an arm provi (38) fastened to said by a driving central, right, or leave the rotary pat forward or b The co wh'eel pro lever provi oted centrally ov connecting the changing barp r receptacl moving its central po rier. bar can b desired.

5. In a strai 25 combination wit jacks, are' suppor terns arrange rotating in b tating the pa vibratin havin adaptlng them to r whether they are r 6. Ina straight k retracting tionary pa retracting cam tlonary part, a

switch may es for yarn c the switch to the right or left of sition whereby the yarn care moved in either direction as the paralle ted, the

levers con cam composed rt, adjusting poi of said sta justing sai 7. In a s d poi of said station ate adapted to be the pawl, iavpattern al height fastened rovided with t on the pattern.teeth, t this lever with a rocking ded with cam blocks rocking shaft, wherebe controlled in a tion adapted `to st, or move it d as desired. ination of a revolving ded with a swinging Iswi ded with a toothed er the switch ackwar mb switch tch, a segment piv-v wheel, a'link lever to a yarn carrier ovided with two or-more arriers and meansfor ght knitting m h the needles, the needl l beds in which the needles horizontal rota with the be s and ans for roachine, the

patd lparallel o th directions, me tterns in both directions,

trolling the h in front and rear on to the patterns orward or back. nitting machine, a needle of a central staand nts at each end tionary part and means nts together in unis trai'ght knitting ma composed of djustmg poin for adaneedle' a central stah end ted on oscillatscillating both ary part moun ing supports, and me points in iinison.

8. The Straight knitting In a needle cont-ro horizontal axis,

notched by which allow combination achine having lling pattern rotating on a the end of said pattern becutting away the parts be inactive, in with actuating mechanism ing zadaptedto rotate said pattern in both direcrl tions.

9. ffhestraight knitting a .rotating mutilat operating `bination w1 nismy `moving said cylin tions.

l0. The stral in are combined kn stationary p needles, vib jacks and riding up ders arranged parall ing feet-beve adaptii tions o machine having. n cylinder,th which are"ixed,'ixi comcontrolling. mechader .in both-)directh automatic achine wheredies l held iin jacksl opera controlling the on rotary pa el to the beds and havin :front and rear, th to lift the levers from posiitions on the' cylinders are d cylinders betion, a toothed a switch wheel rib engaging said d rib embodying amovshifting said movh means-whereby on in different for actuating the ght knitting In arallel beds,

rating levers ttern cylinthe cylinders to -of the same whether turned forward or b ble in either direc lwheel gearedto the cyli having a perip toothed wheel, sai able section, a dev able section provi it is adapted to sh directions, and means shifting devi 11. A stral are combined knitting allel 'stationary beds, ;needles, vi jacks, :parallel tot direction, said both in front and rear,

brating leversv controllingv the ght knitting rotary pattern cylinders arranged and movable in either feet beveled riding on the dapted to lift the if thecylinders to p of the sam cylinders are turne d wheel geare switch wheel having a perip ing said wheel, said ri able section, device able section adapted to rections, and means for actu ing devices.

levers having cylinders andl being a levers lfrom positions o positions on to e, whether the rd or back, a d to the cylinders, a

heral rib engagbodying a movhitting said movshift it in both diating the shift- ILSON WORTH BURSON.`v Witnesses' J'. G MILNEB,

S A KILBURN. 

